5.Trigger Setup - 5.3.Pre-Trigger
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Trigger filter
The trigger filter function ensures that a trigger is detected when the trigger conditions are met for a
specified period of time, in order to prevent erroneous trigger detection due to noise or chattering in the
signal near the trigger level.
Trigger detection point
Trigger level
CHn input signal
T trigger filter
5.3. Pre-Trigger
When performing memory recording, a pre-trigger can be set to adjust the recording length before and
after the trigger detection point in the memory block.
Trigger detection
Trigger level
End measurement
Start measurement
Input signal
Pre-trigger
(post-trigger)
30%
(70%)
Memory block
5.3.1. Pre-Trigger Setup
Tap the SETUP key on the side menu to display the settings menu.
Tap the Recording tab in the recording settings to display the recording setup screen.
The recording device settings are displayed below the recording settings.
Tap Pre-Trigger on the right of memory recording to set the pre-trigger.
